And, Beethoven's name include 'van'. 'van' is Dutch language that means English 'of' German 'von'. Why does Beethoven's name include Dutch 'van'? Because his grandfather came from Flanders(now Belgium).

Dutch 'van' is not aristocrat but German 'von' is aristocrat. However the German at that time confused Dutch 'van' with German 'von'. As a result, Beethoven and his neighbor misidentified him an aristocrat.